how to tell a forged engine?

[afennell]

Is there any way to tell if a car has a forged engine other then the paper work or taking the engine apart?

Are there any symptom or tell tail signs when running or starting up. I once heard they are slightly noisier on start-up but I can’t see that been the case.

[ashley]

I know you said without pulling the engine apart, but you could drop the sump for a butchers...

[Slarty]

Forged pistons do tend to suffer with a little more piston slap on a cold start up but it's not exactly a deffinate way of telling!

[afennell]

thanks guys,

suppose dropping the sump is an easy job, thanks chaps.

[Quigonjay]

or you could use a boroscope to view the piston tops

[jimGTS]

or you could use a boroscope to view the piston tops

Did mine have stock pistons? I know you guys checked I was told.

I to would like to know if rebuild.

[afennell]

if you did have a look how would you tell the difference.
Would there be markings to look for?

[afennell]

or you could use a boroscope to view the piston tops

Did mine have stock pistons? I know you guys checked I was told.

I to would like to know if rebuild.

Jim are you power figures hub or fly?

[Bry]

or you could use a boroscope to view the piston tops

Did mine have stock pistons? I know you guys checked I was told.

I to would like to know if rebuild.

Kieran has an endoscope/borscope thingy at his garage in Ifield, you could get him to have a look

[Quigonjay]

or you could use a boroscope to view the piston tops

Did mine have stock pistons? I know you guys checked I was told.

I to would like to know if rebuild.

i dont think we did have a look jim, could be mistaken but i dont remember doing so

[ashley]

I'd guess it would be difficult to tell by inspecting the piston crowns unless it's a really recent bulid as they will be coated in carbon anyway?

[Steve-O 2007]

or you could use a boroscope to view the piston tops

Did mine have stock pistons? I know you guys checked I was told.

I to would like to know if rebuild.

Surely with all the other mods on your car it will have uprated internals as well wont it??

[afennell]

I'd guess it would be difficult to tell by inspecting the piston crowns unless it's a really recent bulid as they will be coated in carbon anyway?

Thats what I was thinking as well,

[Quigonjay]

mine did have deposits on the top but we where able to match them to a set of je pistons we had in stock

[afennell]

cool

Does not mater now as I did not get the car,

[RyanRs]

or you could use a boroscope to view the piston tops

or a torch and a bit of eye squinting!! lol

if you see numbers in the center of the crown ,like 2B 3C iirc then there oem.

[JJ]

Personally, if in doubt before putting some serious boosting through, sump needs to come off and inspect from below .. as other have mentioned, the crown often gets a little too carboned up for an assessment...

[jimGTS]

or you could use a boroscope to view the piston tops

Did mine have stock pistons? I know you guys checked I was told.

I to would like to know if rebuild.

i dont think we did have a look jim, could be mistaken but i dont remember doing so

think it was on rashs orginal import thread, it said you guys looked and they didnt look stock, but wernt sure exactly what they were.
just thought it may have been yourself that looked.

from what i can see, they do look shiney where there isnt carbon build up.
thin build up to, nothing like the crazy build up i had on my rev2 pistons (i cleaned them up)

[mr2nut123]

Also, what is the life span in general compared to normal engines? I've heard from a reliable MR2 tuner that I would most likely need a rebuild after between 12-20k miles depending on driving style etc. What exactly would this rebuild consist of most of the time? Just bearings and a few small easily worn components?

[Quigonjay]

Did mine have stock pistons? I know you guys checked I was told.

I to would like to know if rebuild.

i dont think we did have a look jim, could be mistaken but i dont remember doing so

think it was on rashs orginal import thread, it said you guys looked and they didnt look stock, but wernt sure exactly what they were.
just thought it may have been yourself that looked.

from what i can see, they do look shiney where there isnt carbon build up.
thin build up to, nothing like the crazy build up i had on my rev2 pistons (i cleaned them up)

ah right, must have been peter